Scow for transporting gravel.



Patnted Dec. 17,1912.

a SHEETS-SHEET 1 G. JAGK$ON. SOOW FOR TRANSPORTING GRAVEL.

APPLICATION FILED 00124, 1911.

G.W.JAGKSON. 800W FOB TRANSPOETING GRAVEL.

' APPLIOATIOH FILED 000.24, 1911. 1,047,233. S Patented Dec. 17, 1912.

3 SHEETS-SHEET 2.

Q & 000000000 0 000 0000000000. 000000000 00%%%%%%&&&%%' 0000000000000 0000000000000 0000000000000 %&&fififlfiflfifififlfo 00000000000990 nnnnnn G. W. JACKSON.

800W FOR TRANSPOBTING GRAVEL.

APPLICATION rILnn 001.24, 1911.

1,047,233. Patented,Dec..17, 1912.

8 SHEETS-SHEET 8.

$2212)? for (lamye [ff/km UNITED STATES PATENT OFFICE.

GEORGE W. JACKSON, OF CHICAGO, ILLINOIS.

SCOW FOR TRANSPORTING GRAVEL.

Anplication filed October 24, 1911.

To all whom it may concern:

Be it known that I, GEORGE W. J AoKsoN, a citizen of the United States, and a resigravel, or gravel and sand, loaded thereon from the bottom of a lake or other body of water, and the invention consists in the matters hereinafter set forth and more particularly pointed out in the appended claims.

Among the objects of the invention is to provide, in a scow for this purpose, means for loading the gravel on the scow from relatively deep deposits under the'water, so arranged as to enable the boat to be uniformly loaded from end to end with anexceedingly simple loading apparatus.

A further object of the invention is to pro vide improvements in such scow constructions as to facilitate the draining of the water and escape of the liner sand that is discharged into the compartment of the scow,

so as to facilitate the handling and loading of the gravel in the scow compartment.

In the drawings ;Figure 1 is a plan view of. a gravel scow embodying my invention, with a portion of the loading apparatus omitted. Fig. 2 is a side elevation thereof. Fig. 3 is a transversesection thereof with the loading apparatus omitted. Fig. 4 is a fragmentary plan View, showing the arrangement of the screens and their supports. Fig. 5 is a partial vertical section on the line of Fig. 3. Fig. 6 is a perspective view of a, clam-shell bucket constituting part of the loading apparatus shown in Fig. 1 Fig. 7 is a side elevation of the scow provided with another form of loading apparatus. Fig. 8 is a partial plan View thereof.

The scow may be of any suitable or preferred design or construction, and is herein shown as a self-propelled scow, with its Specification of Letters Patent.

Patented Dec. 1'7, 1912.

Serial No. 656,499.

propelling power plant, indicated as a whole by 11, located at the stern of the boat.

Disposed along the longitudinal center of the scow is a single, elongated compartment 15, which extends from the bottom to the top of the scow, and is open at its top to receive the gravel or other granular material. Said compartment is provided with one or more screens which extend entirely across the horizontal dimensions of the compartment, said screens constituting grading and supporting means for the sand and gravel which is discharged into said 'compartment, arranged to retain the material of a desired mesh and to permit the material of a finer mesh to drop therethrough.

As herein shown, three superposed screens 16, 17 and 18 are employed, located at suitable vertical distances apart. The upper screen 18 is formed with the largest mesh, the lower screen 16 with the smallest mesh and the middle screen 17 with a mesh intermediate that of the top and bottom screens.

The scow herein shown is designed for transporting gravel only, and the lower screen 16 is located and supported near the bottom of the compartment. If the screens be embodied in a scow having dumping doors, the bottom screen will be located closely adjacent to the door level. The said screens may be supported in any suitable manner on the side and end walls of the compartment. As herein shown the side and end walls are provided with horizontal brackets 19, 19 extending inwardly there fro-m and attached to said walls in any suitable manner. Said brackets are shown as made of L shape in cross section. In addition to said brackets I may provide a suitable number of transverse beams 20 which in order to enable the same to be readily handled when installing them 'or replacing them. If desired, when a plurality of screens are employed, the lowermost screen.fiiiay -loe'I-substituted by a solidplate .or.;pla s in order to retain the sand loaded into'the ompart ment in the lowermost section t eof along with the gravel and other co sermaterial in the section or sections ahove most sections. i

The loading apparatusshow embraces a vertically swinging boo 21- that is pivoted at its inner end tothe swinging or rotating platform 22 which is supported on a truck23, that spans the compartment 15. The wheels 24: of said truckw'travel on parallel rails 25,25 that are supportedxon the deck of the scow laterally at the sides of the compartment. Said boom 21' carries at its outer end a clam-shellbucket 26 or like device that is suspended from theouter end of the boom on suitable cables-trained over guide sheaves on the boom "and'back to the controlling drums (not 'shownlon the platform 22. The said boom is" likewise controlled in the rising and falling movements by cables trained over-other controlling drums (not shown) on theplatform; 22. The said platform may carry any suitable form of motor for operating the'controlling drums of the boom-and bucket,;as"wellas controlling the movement of the truck. 23

L and platform 22'. I As herein shown, the; operating motor-comprises an electric motor 29 which is geared to'the controlling drums, platform and truckmechanisms; The".

shafts of the truck supporting wheels'24 are gearedto adriving shaft 30 in any suitable manner, which latter shaft is provided with 'agear wheel 31 that meshes with the gear pinion 32 that is mounted on asha'ft that is operatively connected to the-motor shaft.

in any suitable manner, whereby theboofn carrying truck may be caused to travel fromone end to the other of its supporting track rails on the-scow. The said truck is also provided with the usual circular rack 33 that meshes with a pinion 34 which is carried by a vertical shaft which is operatively connected with the motor, whereby theplatform and the,boom carried thereby may be swung or rotated about the pivotal axis of the platform, so that the outer end of the boom and the bucket carried thereby may be swung outwardly over the end of the scow, or over either side thereof to reach the gravel deposits at the end or sides of the scow. The particular construction of the mechanism for. controlling the boom and bucket, as well as'for controlling the movement of the truck and the boomsupporting platform, constitute, in themselves, no part of the present invention, and may be made of any suitable or preferred construction.

The clam-shell bucket may be lowered at any suitable point at the end or sides of the scow within reach of the boom, and is operated' by the motor .driven truek and motor operated platform'to discharge the contents of the bucket into any'part of the compartment 15. Likewise the boom and its clamshell or grab bucket may be employed to take up the gravel from the compartment 15 of the scow and carry it to a suitable point for thedisposal thereof. When unloading a scow having a plurality of superposed screens, the contents of the upper section of the compartment is first unloaded andl -the 11 per screens 18 are then removed. Therea ter the contents of the next lower section .of the compartment are unloaded and the next lower screens 17 are removed. Finally 1 the contents of the lowermost sectionlof the compartment is removed, but, ordinarily it is not necessary to remove the lowermost screens, which may be permanently fixed in place.

to be retained, the scow is providedfwithi'a' carry away the finer sand ormateria'l not I water pumpmg equ1pment,-.comprising, as

distance into the water. The outlet side of herein shown, a centrifugal pump 36, the in- 1 take pipe 37 of which extends through theside of the boat and downwardly a short theypump' is connected to a flexible hose 38 which is made of such length asto'conveniently serve all parts'of the compartment as water is discha-rgedinto the-compartment, together with the granular materiahinisuchvolume that when mixed with the granular material, the mixture constitutes'a rea'dily semi-fiuidity, reladilyspreads throughout the compartment, the water- Washing or carrying the finer material th'roughthe screens and grading the material and. depositing" each grade of material on its proper-screen support. 3

the material is -'deposit'ed"thereintoi The flowablef-mixture which, by'reasjon of its f my As a further and separate-improvement the side: and end walls of the compartment perforated and imperforate plates are spaced apart a distance to provide around the com partment' vertical passages 42 which are open at the lower side thereof. The pro vlsion of the, hollow walls, with the inner members thereof perforated as shown, m'its the finer sand and the water to rea ily esca e from the compartment and back into the ottom of the lake or other body of water, so that thereby the loading of the compartment may be hastened, inasmuch as all the water and sand is not required to escape through the bottom screen. The said perforated and imperforate plates of the I hollow walls may be spaced from each other sist of vertically arranged I-beams, fastened in any suitable manner to the inner and outer plates of the hollow walls.

In order to avoid depositing an undue amount of water and sand into the compartment 15 ot' the scow the walls of the clamshell bucket may also be perforated, as 1ndicated in Fig. 6.

In Figs. 7 and 8 I have shown another form of loading apparatus for raising the gravel and sand from the bottom of a body. of water and depositing it into the compartment The apparatus shown in said figures comprises a series of buckets 45, 45,.

connected in any suitable manner to an endless belt or chain 46, that is trained about suitable pulleys (not shown) carried at the ends of a boom 47 which is pivotally supported at the rear end of the scow and trails rearwardly and downwardly therefrom. Said boom 47 may be supported at the stern of thc scow in any suitable manner to permit it to be swung vertically and through a limited range from side to side. As herein shown, the rear end of the boom is provided with a rigid downwardly extending leg 48 which is pivoted at its lower end at 49 to a turn table 50, which latter is rotatively supported on a suitable frame 51 mounted on the deck of the scow. The said turn table may be actuated to turn the same about its pivot 52 by means of a rotative pinion 53 carried by the table and meshing with a circular rack 54: carried by the support 51.-

Rollers.56 carried by the turn table travel on the support 50 to stably support the table. The said boom 47 may be raised and lowered by any suitable method, as, for instance, the raising and lowering screws 58 suitably supported on the turn table and engaging screw threaded nuts pivotally carried by the boom. The pinion 53 and the boom raising and lowering screws 58 as well as the bucket chains may be operated from any suitable motor.

The contents of the buckets 45 are discharged into a hopper 60 which in turn dis charges the material through the chute 61 onto an endless belt 62 arranged longitudinally over the compartment and trained about suitable rollers 64 located over the scow compartment at the ends thereof. The material may be scraped from said belt or conveyer into the compartment below by means of a scraper-devlce 66 located above the belt, and supported at its ends by standbe made V-shape, as shown in Fig. 8, so as.

to deposit the material scraped from the belt on both sides ofthe compartment. If the belt is located at one side of the compart-' ment a transversely oblique scraper may be employed to scrape the material therefrom into the compartment below.

So far as is concerned the hollow walls of the compartment such walls may be employed in gravel scowsof other design. Likewise the structural details of the sc w shown may be somewhat varied within t e scope of my invention.

I claim as my invention 1. A scow for transporting gravel discharged thereinto from a body of sand and gravel beneath a body of water, provided with a compartment which is open at its top and at its bottom, a screen extending across said compartment between its top and its bottom, a boom controlled and supported bucket for raising sand and gravel and de positing it on said screen, whereby the sand isseparated from the gravel and falls back to the natural deposit beneath the body of water, and other means for discharging }water 'from said body of water into said compartment together with said sand and gravel.

2. A scow for transporting gravel deposited thereinto from a natural body of sand and gravel beneath a body of water provided with a longitudinally arranged compartment which is open at its top and at its bottom, a screen extending across said compartment, a loading apparatus supported on the scow for carrying the gravel and sand to and depositing the same in said compartment, and constructed'and arranged to transfer the contents of the scow from said compartment to a point of disposal exterior thereto, and a water pumping apparatus for pumping the water from said body of water into said compartment.

3. A scow provided with a longitudinally arranged compartment which is open at its top and at its bottom, a screen extending across the compartment and supported on the walls thereof, a loading apparatus comprising a truck arranged over the compartment and provided with wheels that travel on track rails at the sides of the compartment, a boom pivotallv supported on the truck,& bucket carried by the outer end of the boom, with means for lowering the same walls comprising an inner perforated plate my invention aflix my signature in the presand an outer imperforate plate which are ence of two witnesses, this 19th day of Ocspaced to provide a water escape passage tober, A. D. 1911.

which surrounds said compartment, and GEORGE W. JACKSON.

means for depositing sand, gravel and water Witnesses:

into said compartment. WILLIAM L. HALL,. In testimony that I claim the foregoing as G. E. DOWLE. I v 

